Customer feedback is crucial for designing products that meet market needs. A new model called Satisfaction Importance Evaluation (SIE) helps evaluate feedback to improve product design. By gathering feedback from users during and after product release, designers can create products that can adapt to different market demands. The SIE model assesses product modules and attributes to ensure they align with market needs. This approach helps in identifying areas for improvement in current products and guides future product development. The study shows that incorporating customer feedback into product design can lead to better products and shorter delivery times.